Sash balance



10 or jointly.

Patented Dec. 30,1930 I I t s U ITED stares PATENT OFFICE ea e ALA CEOriginal appliea tion filed June 25. 1927, Serial No. 201,455.' Dividedand this application filed January 18,

' 1928. Serial no. 247,651.

. My invention relates to improvements in rollerintermediatethe twostationary roilwindows and moreparticularly to windows ers. The movablerolleris mounted on a of the kind'comprising double-hung sashes,weighted member, which is movable up and andis a division of my;c'opending applicadownwithin a side chamber in the frameti-on forWindows, filed June 25, 1927, Serial work, and is adapted to bereleasably re- 55 No.2O1A55. I p strained from the movemenu'at will. Oneobject of my invention is to provide In order to facilitate a betterunderstandmeans-whereby aplurality of sashescan ing'ofmy invention, thefollowing descripreadily slide up and down'either individually tions aregiven with reference to'the draw- 1 mgs. 7 j j A otherobject'ofmyinvention is to obtain Referring to the drawings, a window emmeans forholding all of the plurality of b-odying myinvention comprises,ingeneral, sashes or e1ther-one of them at any desired a rectangularframework 1,hav1ngaplurahty heights;v of usual longitudinal grooves ineach of its A further'object. of my invention is to vertical sides, andinner and. outer sashes 55 or stationary.

obtain means for providing counter-weights 3 and 4, for holdingwindow-glasses therefor the two sashes combined and also prowith andadapted to slide up and down along viding guide means for sash-cords,which the vertical grooveswith theirvertical side guide me ns mayfunctiona's either movable edges guided thereby, as tlsu'al- At the topportion of eachvertical side of -70 .A still further object-ofmyinvention is to the frame-work 1,'there are disposed in parprovide meansfor guiding the counter-- allel two stationary pulleys or guide rollers.

weight and also for preventing it fromany One of such rollers is shownby the reference lateralimove'ment, together'with mear'is for 5, theother being disposedbehind the roller releasably restraining thecounter-weight 5 on the commonaxis. The rollers may have 75 Q I from-itsvertical'movements to hold it at any peripheral grooves. Thecounterweight desired height is adapted to travel up and down withinjaThere are other objects and particularities vertical side, chamberformed in the frame- 7 of my said invention,'which,together with work 1behind its grooved side. A rope or the-f-oregoin'gs, will appear in thefollowing sash-cordl is provided extending between 30 descriptions, withreference to the accom: the inner and outersashes past the stationaryp'anying drawings, wherein: rollers such as 5, and a movable roller 14Fig. 1 is an inside elevational View of my mounted on, thecounter-weight 10. window, partly in section and partly broken In eachsidechamber of the framework 1 away. is arrangedja link structure 70.The strucs5 Fig. 2 shows a sectional plan of a part ture: may comprise apair of levers 71 and 7 2, taken at line II-II in Fig. 1. r srespectively pivoted inthe upper and lower. Fig. 3 is a sectionalplanView, injpart, end portions of the weight chamber on the taken at lineIII- 111 in Fig. 1. a 1 axis 73 and 7 i respectively located therein byFig. i is a detail plan showing one pair of suitablebearings means, suchas 75 and 76. 90

the rollers which have fixed bearings, The respective ends of the leversland 7 2 In ractising, my invention, I provide a reoperatlvely connectedby a pair of verpair of sashes,'each slidablyguided in snittlcal links77 and 78. The lower lever 7 21s able grooves at its SlClQS in theframework of provided with an armportion, at the outer window, and asashcord secured at'the ends end of which one end'of a rod 79 is opera- 95to the sides ofthe respective sashes, forming tively connectedtherewith. A similar'link an open loop ending at the respective sashes.struct re is connected to the other end of The cord extends past a pairof stationary thei'od 79.

guide rollers mounted in the upper portion 7 The weighted member 10 isprovided with hf the framework and also a movable guide side grooves 80-and .81 adapted to receivethe we 1;: members the other of the stationaryrollers to the other end secured to the other of the sashes;

When the rod 79 is actuated to the left, the levers 72 and 71 are turnedanti-clock -wise, and the links? 7 and 78 are made to approach eachother, thus shortening the: distance engage the grooves 80 cientpressure thereon to restrain the weighted member 10 from its verticalmovements. When the rod 79 is actuated to the right, the braking actionon the weighted member 10 will be released, as will be readilyunderstood. vVith this arrangement,the window sashes may be operated toslide up and-down or jointly, and also thev 10 'may be properly and 78,enabling smooth operations of the sashes.

either individually weighted members guided by the links 77 Injorder tofacilitate the axial operation of the rod 79, a member may be fiXed'tothe rod 79. The mem.ber,2() has a cam surface 21, adapted to cooperatewith the inner end I of a handle lever 22 pivotally mounted onthe bottomportion of the frameworkby. means of a pin"23. V a

When the link structures are applied to the weight 1 0 when the latteris at any point, the rollers 14 carried thereby assume a correspondingfixed position.

' ropes 13 may be considered, at present, as

The respective extending between the pair the stat onary rollers 5, the"tionary at of sashes past rollers 14, sta- In order to move both of thesashes 3 and {l upwards or downwards simultaneously, or

jointly, the brake devices may be released to permit free =movements ofthe weighted members. 10, and the sashes can bemoved jointly to any.desired height, for the uppermost position. 7 weighted members 10function as the counter example,

1 weight for the bothsashes combined, as they are now suspended from thesash cords 13.

Each sash 3 or 4 may be operated indi .vidually and caused to assume anydesired position independently of the other, as the weighted memberswill be lowered or raised just halfthe distance travelled by theindividual sash by aid of the movable pulleys 14. It will be seen that,since the weighted 10 are restrained from any lateral sashes through thesta- I tionary guideroller 5, past the rollers 14 and scribed, but onlyin so therebetween, and the link edges willgclosely and 81 with a.sufliinvention. is 7 a v side chamber,

j a weighted member In this case, the.

movement and vertically guided by means of the link structure 70, thesashes can slide up and down very smoothly. 7

Although I have shown a particular embodiment of my those skilled in theart that various modifications and changes may be madewithout departingfrom the spirits and scope of the invention, and I do not desire tolimit the invention ,to the specific modification defaras set forth inthe appended claims.

aving now particularly described and ascertained the nature er my saidinvention and in what manner the same is formed, I declare, that what Icla m as my to be pera pair ofsashes vertically slidable in said frame,a -weighted member vertically movable within aside chamber in saidframe,a roller carried on said weighted member, a pair of guide rollersmounted above said side chamber and having fixed bearings, a sash-cordsecured to one of said sashes and extending over one of saidtsta tionaryrollers, engaging under said weight carried roller; and over the otherstationary roller and having the other end secured to the other sash,thus suspending said weighted member therefrom through said Weightcarried roller, a pair of verticallink rods in said side chamber forguiding the vertical movements of saidjweighted member there between,and means for moving said link rods toward and from each other forapplyingbraking action on or releasing said weightedmember. present, andthe otherstationary .rollers in the top of the framework, inthe,

2. A window comprising a frame having a vertical chamber at ofvertically slidable sashes in said frame, vertically movable in saidchamber, a roller revolubly mounted on said weight member. and movabletherewith,

a pair of revolublerollers above said cham- .beer and having 'fixedbearmgs, a sashcord having its ends attached to the respective sashes,said sash cord passing over each of said pair of rollers and under saidweight carried roller, a pair of braking and guiding link rods in saidchamber and at opposite sides of said weight, a-pair oflinks one havinga fixed pivotin the upper end of the said in the lower end 7 link rodsbeing pivotally connected to the said links, andmeans to operate saidlinks to cause the link rods'to brake or release the weight; w

In witness whereof I aflix my signature. KITAROKATOW.

invention, it-will be obvious to one side thereof, a pair.

inc

chamber and the other having a fixed pivot of said chamber, the said 3

